CN112615319B - electrical junction box - Google Patents

Abstract

An electrical junction box includes: a case configured to accommodate electronic components; and a cover attached to the case so as to cover an opening of the case. A wire connected to the electronic component is routed between the electronic component and the cover. The housing includes a fixing member for fixing the electric wire. The fixing member has a face intersecting the attachment direction of the cover portion, and fixes the electric wire to the face.

Description

electrical junction box

technical field

The present invention relates to an electrical junction box such as a fuse box or a junction box.

Background technique

As described in Patent Documents 1 to 5, the above-described electrical junction box includes: a casing for accommodating electrical components such as fuses or electric wires connected to the electrical components; and a cover for covering an opening of the casing. The above-mentioned electric wires are routed in the accommodating space between the electric components accommodated in the housing and the cover portion. However, when the accommodating space is small, there is a problem in that the electric wire presses the cover part and the cover part swells.

Patent Document 1 (JP-A-2015-156752 ) proposes a device for fixing a band for tying electric wires to the side surface of a column erected toward a cover portion. However, even when the electric wire is fixed to the side surface of the column, the electric wire cannot be prevented from bulging toward the cover portion, and the electric wire cannot be prevented from pressing the cover portion to bulge the cover portion.

[Patent Document 1] JP-A-2015-156752

[Patent Document 2] JP-A-2011-15466

[Patent Document 3] JP-A-2010-93964

[Patent Document 4] JP-A-2011-55579

[Patent Document 5] JP-A-2010-124561

SUMMARY OF THE INVENTION

One or more embodiments provide an electrical junction box capable of preventing bulging of a cover portion.

In aspect (1), an electrical junction box includes: a case configured to accommodate electronic components; and a cover portion attached to the case so as to cover an opening of the case. A wire connected to the electronic component is routed between the electronic component and the cover. The housing includes a fixing member for fixing the electric wire. The fixing member has a face intersecting the attachment direction of the cover portion, and fixes the electric wire to the face.

In the aspect (2), the case may have a side wall formed in a cylindrical shape. The wires may be routed near the side walls.

In the aspect (3), the housing may include a cylindrical portion formed in a cylindrical shape, and a partition wall partitioning the interior of the cylindrical portion. The fixing member may be provided on the partition wall.

In the aspect (4), the partition wall may be provided with a cutout at an end portion on the cover portion side. The fixing member may be provided on a side of the cutout away from the cover portion.

In aspect (5), the fixing member may include a rod-shaped arm portion extending in a direction intersecting the attaching direction. The arm portion may pass through a strap wrapped around the wire to secure the wire.

According to the aspect (1), the fixing member has a face intersecting with the attaching direction of the cover portion, and fixes the electric wire to the face. Thereby, the electric wire can be prevented from bulging toward the cover part, and the bulge of the cover part can be prevented.

According to the aspect (2), the electric wire is routed near the side wall. Thereby, the electric wire can be prevented from being caught between the case and the cover.

According to the aspect (3), the fixing member is provided on the partition wall for partitioning the inside of the cylindrical portion. Thereby, it is not necessary to provide the wall portion for providing the fixing member separately from the partition wall, so that space saving can be achieved.

According to aspect (4), the fixing member is provided on a side of the cutout of the partition wall away from the cover portion. Thereby, the electric wire can be fixed by inserting the electric wire into the cutout of the partition wall, so that the position of the electric wire on the partition wall in the direction orthogonal to the attaching direction can be restricted.

According to the aspect (5), the electric wire can be fixed by the fixing member having a simple structure such as the arm portion.

According to one or more embodiments, it is possible to provide an electrical junction box capable of preventing the electric wires from bulging toward the cover portion and preventing the cover portion from bulging.

Description of drawings

FIG. 1 is an exploded perspective view of the electrical junction box according to the present embodiment with the upper cover removed.

FIG. 2 is an exploded perspective view of the electrical junction box shown in FIG. 1 with the lower cover removed.

3 is a perspective view of the electrical junction box shown in FIGS. 1 and 2 viewed from below.

FIG. 4 is a partially enlarged perspective view of the case shown in FIG. 2 .

FIG. 5 is a partially enlarged view of a state in which electric wires are routed in the housing shown in FIG. 4 .

FIG. 6 is a partial cross-sectional view of the wire fixing portion shown in FIG. 5 .

List of reference marks

1 Electrical Junction Box

2 shell

5 Lower cover (cover part)

6 barrel

61 First side wall

62 Second side wall

7 dividing wall

8, 9 Wire fixing part (fixed part)

11 opening

81, 91 The first arm part, the third arm part (arm part)

20 Electronic Components

40 straps

71, 72 Cut

D2 Up-down direction (attachment direction)

L2 wire

Detailed ways

The electrical junction box 1 according to the present embodiment is to be mounted on, for example, a vehicle, and is interposed between a power source (secondary battery) and electronic equipment (not shown) of the vehicle to regulate power supplied from the power source to the electronic equipment. The electrical junction box 1 may also refer to a relay box, a fuse box, a junction box, and the like.

The electrical junction box 1 according to the present embodiment accommodates an electronic component 20 ( FIG. 1 ) and electric wires L1 , L2 ( FIG. 5 ) connected to the electronic component 20 . The electrical junction box 1 is to be provided in an engine room provided on the front side of the vehicle. As shown in FIGS. 1 and 2 , the electrical junction box 1 includes a housing 2 , a first upper cover 3 , a second upper cover 4 , and a lower cover (cover portion) 5 . The housing 2 includes: a cylindrical portion 6 formed in a cylindrical shape; a partition wall 7 for dividing the inside of the cylindrical portion 6 into two regions; and wire fixing portions (fixing members) 8, 9 for fixing The electric wire L2 provided on the partition wall 7 .

The cylindrical portion 6 has openings 10 and 11 formed in a substantially rectangular prism shape, respectively. The opening 10 on one side in the cylinder length direction is closed by the first upper cover 3 and the second upper cover 4 , and the opening 11 on the other side is closed by the lower cover 5 . In the barrel portion 6, the barrel length direction is arranged along the up-down direction D2 of the vehicle such that the opening 10 closed by the first upper cover 3 and the second upper cover 4 faces upward, and the opening 11 closed by the lower cover 5 faces downward. In addition, the cylindrical portion 6 is provided so that the longitudinal direction of the substantially rectangular openings 10 and 11 is along the front-rear direction D3 of the vehicle and the lateral direction thereof is along the left-right direction D1 of the vehicle.

The cylindrical portion 6 has a first side wall 61 and a second side wall 62 arranged along the front-rear direction D3, and a third side wall 63 and a fourth side wall 64 arranged along the left-right direction D1. The cylindrical portion 6 is formed by connecting the third side wall 63 between the rear ends of the first side wall 61 and the second side wall 62 and connecting the fourth side wall 64 between the front ends of the first side wall 61 and the second side wall 62 It is formed into a rectangular cylindrical shape. The lower ends of the first side wall 61 and the second side wall 62 include a plurality of steps, and are thus formed in a step shape whose height is lowered toward the rear side of the housing 2 .

Next, before describing the partition wall 7 of the housing 2 and the wire fixing portions 8, 9, the configuration of the lower cover 5 will be described. The lower cover 5 is attached to the casing 2 in a manner of approaching the casing 2 in the up-down direction D2 (attachment direction) and closing the opening 11 of the casing 2 . As shown in FIG. 2 , the lower cover 5 has: a bottom wall 12 covering the opening 11 of the casing 2 ; The bottom wall 12 is mounted to the vehicle body and has a shape matching the shape of the vehicle body. In this embodiment, the bottom wall 12 includes a front side wall portion 121 , a stepped wall portion 122 and a rear side wall portion 123 . The front side wall portion 121 includes a horizontal surface extending from the front end toward the rear side and perpendicular to the vertical direction D2, and a plurality of inclined surfaces inclined upward and rearward. The stepped wall portion 122 is provided to stand upright upward from the rear end of the front side wall portion 121, and is substantially perpendicular to the front-rear direction D3. The rear side wall portion 123 extends rearward from the upper end of the stepped wall portion 122 . As shown in FIG. 3 , the stepped wall portion 122 is provided at a position on the rearward side of the third step from the front of the first side wall 61 .

The first side wall 131 and the second side wall 132 are arranged along the front-rear direction D3, and the third side wall 133 and the fourth side wall 134 are arranged along the left-right direction D1. The lower cover 5 connects the third side wall 133 between the rear ends of the first side wall 131 and the second side wall 132 and the fourth side wall 134 between the front ends of the first side wall 131 and the second side wall 132 It is formed into a rectangular cylindrical shape. The upper end portions of the first side wall 131 to the fourth side wall 134 are stacked inside the lower end portions of the first side wall 61 to the fourth side wall 64 of the cylindrical portion 6 . Similar to the shape of the lower ends of the first and second side walls 131 and 132 , the first and second side walls 131 and 131 are stacked at the inner sides of the lower end portions of the first and second side walls 61 and 62 of the cylindrical portion 6 . The upper end of the wall 132 is formed in a stepped shape having a plurality of steps.

The configuration of the casing 2 will be described. As shown in FIGS. 2 , 4 and 5 , a partition wall 7 of the housing 2 is provided in the cylindrical portion 6 orthogonal to the front-rear direction D3 , and both ends of the partition wall 7 in the left-right direction D1 are connected to the cylindrical portion 6 of the first side wall 61 and the second side wall 62. That is, the partition wall 7 partitions the interior of the cylindrical portion 6 into two regions arranged in the front-rear direction D3. In the present embodiment, of the two areas, the front area in the front-rear direction D3 is used as a user maintenance area, and the rear area in the front-rear direction D3 is used as a dealer maintenance area. The customer service area houses electronic components 20 to be serviced by the user. The dealer service area houses electronic components 20 to be serviced by the dealer. The opening 10 above the dealer's maintenance area is covered by the first upper cover 3 , and the opening 10 above the user's maintenance area is covered by the second upper cover 4 . In addition, in the present embodiment, the partition wall 7 is connected to a position slightly forward of the third step from the front of the first side wall 61 .

The electronic components 20 refer to relays, fuses, fuses, and the like. The electronic part 20 includes: a case 21 ( FIG. 1 ) having built-in electronic part bodies (not shown) such as a relay body and a fuse body; and a terminal part (not shown) connected to the electronic part body. The terminal portion is provided to protrude from the housing 21 . The electronic component 20 is accommodated in the cylindrical portion 6 in a state in which the housing 21 is on the upper side and the terminal portion (not shown) is on the lower side. The electric wires L1 , L2 accommodated in the electrical junction box 1 are connected to the terminal portion via mating terminals (not shown). That is, the electric wires L1 , L2 are arranged below the electronic part 20 and between the electronic part 20 and the lower cover 5 . The electric wires L1, L2 connected to the electronic components 20 are drawn out from the electrical junction box 1 through the electrical wire lead-out ports 14, 15 (see FIG. 1) provided on the side surfaces of the electrical junction box 1 in the front-rear direction D3 .

As shown in FIG. 2 , the wire lead-out port 14 includes: a groove portion 14A having a U-shaped cross-section formed on the housing 2 ; and a groove portion (not shown) having a U-shaped cross-section formed on the lower cover 5 . The groove portion 14A is provided to protrude inwardly from the edge of the semicircular cutout provided at the lower end of the fourth side wall 64 . A groove-shaped portion (not shown) formed on the lower cover 5 is provided to protrude inwardly from the edge of the semicircular cutout provided at the upper end of the fourth side wall 134 . The groove-shaped portion 14A on the cylindrical portion 6 and the groove-shaped portion (not shown) on the lower cover 5 are stacked on top of each other to form the wire lead-out port 14 .

The wire lead-out port 15 includes: a groove portion 15A having a U-shaped cross-section formed on the housing 2 ; and a groove-shaped portion 15B having a U-shaped cross-section formed on the lower cover 5 . The groove portion 15A is provided so as to protrude outward from the edge of the semicircular cutout provided at the lower end of the third side wall 63 . The groove-shaped portion 15B is provided to protrude outward from the edge of the semicircular cutout provided at the upper end of the third side wall 133 . The groove-shaped portion 15A on the cylindrical portion 6 and the groove-shaped portion 15B on the lower cover 5 are stacked on top of each other to form the wire lead-out port 15 .

Further, in the present embodiment, as shown in FIGS. 4 and 5 , the dealer maintenance area is provided with a polyfuse section 30 (hereinafter simply referred to as a "multi-FL section") as an electronic component. The multi-FL portion 30 is provided long in the left-right direction D1 and is adjacent to the front side of the partition wall 7 . Both ends in the left-right direction D1 of the multi-FL portion 30 are provided at positions separated from the first side wall 61 and the second side wall 62 . The multi-FL part 30 is connected to the so-called thick electric wire L1 which can pass a large current. In the present embodiment, five electric wires L1 are arranged in the left-right direction D1 and are connected to the multi-FL portion 30 . Therefore, as shown in FIG. 5 , the electric wire L2 routed across the dealer maintenance area and the user maintenance area runs along the first side wall 61 and the The second side walls 62 are arranged on both sides in the left-right direction D1 of the multi-FL portion 30 . The electric wire L2 may be a so-called thick electric wire or an electric wire bundle in which a plurality of electric wires are bundled.

In the present embodiment, a pair of cutouts 71 , 72 are provided at the lower end of the partition wall 7 . In the present embodiment, a pair of notches 71 , 72 are provided at both end portions in the left-right direction D1 of the partition wall 7 . When the electric wire L2 avoiding the multi-FL portion 30 is inserted into the cutout 71 or 72, the electric wire L2 is sandwiched between the partition wall 7 and the first side wall 61 or the second side wall 62 in the left-right direction D1. Thereby, the position of the electric wire L2 in the left-right direction D1 (direction orthogonal to the vertical direction D2 (attachment direction) on the partition wall 7) can be restricted.

The peripheral portion of the partition wall 7 is close to the stepped wall portion 122 of the lower cover 5 as described above. Therefore, the accommodating space for accommodating the electric wires L2 is very small (ie, the distance between the bottom wall 12 of the lower cover 5 and the upper end of the partition wall 7 is short). In addition, since the electric wires L1 and L2 are fitted in the up-down direction D2 and connected to the electronic component 20 , the electric wire L2 bulges toward the lower cover 5 side. Thereby, the electric wire L2 presses the lower cover 5 so that the lower cover 5 bulges. Therefore, in the present embodiment, the wire fixing portions 8, 9 are respectively provided on the upper sides of the cutouts 71, 72 (the side away from the lower cover 5).

As shown in FIG. 4 , the wire fixing portion 8 includes a first arm portion (arm portion) 81 , a second arm portion 82 , and a support portion 83 . The first arm portion 81 is formed in a rod shape, protrudes rearward from the upper end of the cutout 71 provided in the partition wall 7, and extends in the front-rear direction D3. The second arm portion 82 is formed in a rod shape, and is provided to stand upright upward from the rear end portion of the first arm portion 81 . The support portion 83 supports the upper end of the second arm portion 82 .

The support portion 83 has a first wall portion 831 , a second wall portion 832 and a third wall portion 833 . The first wall portion 831 is provided so as to be spaced apart from the partition wall 7 in the front-rear direction D3. The first wall portion 831 is provided in parallel with the partition wall 7 . The upper end of the second arm portion 82 is connected to the lower end of the first wall portion 831 .

The second wall portion 832 and the third wall portion 833 are provided to be spaced apart from each other in the left-right direction D1. The second wall portion 832 and the third wall portion 833 protrude from the partition wall 7 to the rear side, and their rear ends are connected to the first wall portion 831 . Thereby, the first wall portion 831 can be supported at a position spaced apart from the partition wall 7 in the front-rear direction D3.

The wire fixing portion 9 includes a third arm portion (arm portion) 91 and a support portion 92 . The third arm portion 91 is formed in a rod shape, protrudes rearward from the upper end of the cutout 72 provided in the partition wall 7, and extends in the front-rear direction D3. The support portion 92 supports the third arm portion 91 . The support portion 92 has a fourth wall portion 921 , a fifth wall portion 922 and a sixth wall portion 923 . The fourth wall portion 921 is provided to be spaced apart from the partition wall 7 in the front-rear direction D3. The fourth wall portion 921 is provided in parallel with the partition wall 7 . The fifth wall portion 922 and the sixth wall portion 923 protrude from the partition wall 7 to the rear side, and their rear ends and upper ends are connected to the lower end of the fourth wall portion 921 . Thereby, the fourth wall portion 921 can be supported at a position spaced apart from the partition wall 7 in the front-rear direction D3.

As shown in FIG. 6 , the electric wire L2 is arranged to pass through the cutouts 71 , 72 under the first arm portion 81 and the third arm portion 91 . When the first arm portion 81 or the third arm portion 91 and the electric wire L2 are bound together through the strap 40 , the electric wire L2 can be fixed to the lower surface of the first arm portion 81 or the third arm portion 91 . The lower surface of the first arm portion 81 or the third arm portion 91 is a surface intersecting with the attachment direction (up-down direction D2 ) of the lower cover 5 . Thereby, the electric wire L2 can be prevented from bulging toward the lower cover 5 .

According to the above-described embodiment, the housing 2 includes the wire fixing portions 8 , 9 for fixing the wire L2 on the plane intersecting the attaching direction (up-down direction D2 ) of the lower cover 5 . Thereby, the electric wire L2 can be prevented from bulging toward the lower cover 5, and the bulging of the lower cover 5 can be prevented.

According to the above-described embodiment, the electric wire L2 is routed along the first side wall 61 or the second side wall 62 of the barrel portion 6 . As a result, when the electric wire L2 and the first side wall 61 or the second side wall 62 approach each other, the electric wire L2 may be caught between the case 2 and the lower cover 5 . However, in the present embodiment, the electric wire L2 is fixed to the casing 2 by the electric wire fixing portion 8 or 9, so that the bulging of the electric wire L2 toward the lower cover 5 can be prevented, and the electric wire L2 can be prevented from being caught between the casing 2 and the lower cover between 5.

According to the above-described embodiment, the wire fixing portions 8 , 9 are provided on the partition wall 7 for partitioning the inside of the cylindrical portion 6 . Thereby, it becomes unnecessary to provide the wall part for providing the electric wire fixing parts 8 and 9 independently from the partition wall 7, and it becomes possible to achieve space saving.

According to the above-described embodiment, the wire fixing portions 8 , 9 are provided on the side of the cutouts 71 , 72 of the partition wall 7 away from the lower cover 5 . Thereby, the electric wire L2 can be fixed by inserting the electric wire L2 into the notches 71 and 72 of the partition wall 7, and the position of the electric wire L2 in the left-right direction D1 can be regulated.

According to the above-described embodiment, the wire fixing portions 8 and 9 respectively include the rod-shaped first arm portion 81 and the third arm portion 91 which pass through the band 40 around which the wire L2 is wound. Thereby, the electric wire L2 can be fixed by the electric wire fixing parts 8 and 9 which have a simple structure, such as the 1st arm part 81 and the 3rd arm part 91.

The present invention is not limited to the above-described embodiments, and can be appropriately modified, improved, and the like. In addition, the materials, shapes, sizes, numbers, arrangement positions, etc. of the respective components in the above-mentioned embodiments are optional and not limited as long as the present invention can be realized.

According to the above-described embodiment, the electric wires L2 routed on both sides in the left-right direction D1 of the casing 2 are fixed by the electric wire fixing portions 8 , 9 , however, the routed positions of the electric wires L2 are not limited thereto. The electric wire L2 may be routed between the electronic component 20 provided in the housing 2 and the lower cover 5 . For example, the electric wire L2 routed at the center in the left-right direction D1 of the casing 2 can be fixed by the electric wire fixing portions 8 and 9 .

According to the above-described embodiment, the wire fixing portions 8, 9 are provided on the partition wall 7, but the present invention is not limited thereto. The wire fixing parts 8 , 9 may be provided on the housing 2 , for example, may be provided on the first side wall 61 and the second side wall 62 .

According to the above-described embodiment, the cutouts 71, 72 are provided in the partition wall 7, and the electric wire L2 is inserted into the cutouts 71, 72, but the present invention is not limited thereto. The provision of the cutouts 71 , 72 in the partition wall 7 is not essential and not necessary.

According to the above-described embodiment, the first arm portion 81 and the third arm portion 91 are provided to extend in the front-rear direction D3 which is the laying direction of the electric wires L2, however, the present invention is not limited thereto. The first arm portion 81 and the third arm portion 91 may extend in a direction intersecting the vertical direction D2, for example, may extend in the left-right direction D1.

According to the above-described embodiment, the wire fixing portions 8 , 9 respectively include the rod-shaped first arm portion 81 and the third arm portion 91 passing through the band 40 around which the wire L2 is wound, but the present invention is not limited thereto. The wire fixing parts 8, 9 may include clamps for holding and fixing the wire L2, respectively. As long as the jig can fix both sides in the vertical direction D2 of the electric wire L2, the electric wire L2 can be fixed to the surface of the jig which intersects the vertical direction D2.

Here, the features of the embodiments of the above-described electrical junction box 1 are briefly summarized in the following [1] to [5].

[1] An electrical junction box (1), comprising:

a housing (2) configured to accommodate electronic components (20); and a cover (5) attached to the housing (2) so as to cover the housing (2) ) opening (11),

Wherein, the electric wire (L2) connected with the electronic component (20) is arranged between the electronic component (20) and the cover (5),

wherein the housing (2) includes a fixing member (8, 9) for fixing the electric wire (L2), and

Wherein, the fixing member (8, 9) has a surface (the lower surface of 81) intersecting with the attaching direction (D2) of the cover portion (5), and the electric wire (L2) is fixed to the surface ( 81 on the lower surface).

[2] The electrical junction box (1) according to [1],

wherein the housing (2) has cylindrical side walls (61, 62), and

Wherein, the electric wires (L2) are arranged near the side walls (61, 62).

[3] The electrical junction box (1) according to [1],

wherein the housing (2) has a cylindrical portion (6) formed into a cylindrical shape and a partition wall (7) partitioning the interior of the cylindrical portion (6), and

Wherein, the fixing members (8, 9) are arranged on the partition wall (7).

[4] The electrical junction box (1) according to [3],

Wherein, the partition wall (7) is provided with notches (71, 72) at the end of the cover (5) side,

Wherein, the fixing parts (8, 9) are arranged on the side of the cutout (71, 72) away from the cover part (5).

[5] The electrical junction box (1) according to any one of [1] to [4],

wherein the fixing member (8, 9) includes a rod-shaped arm portion (81, 91) extending in a direction intersecting the attaching direction (D2), and

Wherein, the arm parts (81, 91) pass through the strap (40) wound around the electric wire (L2) to fix the electric wire (L2).

Claims (4)

1. An electrical junction box, comprising: A case configured to accommodate an electronic component, the case including a case body and a wire lead-out port extending from the case body through which an electric wire connected to the electronic component is extracted from the electric wire junction box leads; and a lower cover attached to the casing so as to cover the opening of the casing, Wherein, the electric wire is arranged between the electronic component and the lower cover, Wherein, the housing body includes a cylindrical portion formed into a cylindrical shape and a partition wall separating the interior of the cylindrical portion, wherein, the partition wall of the housing body includes a fixing member for fixing the electric wire, and Wherein, the fixing member includes a rod-shaped arm extending in a direction intersecting the attaching direction of the lower cover, the rod-shaped arm having attachment with the lower cover A face whose direction intersects and extends along a routing direction of the electric wire, and the fixing member fixes the electric wire to the face so as to prevent the electric wire from bulging toward the lower cover. 2. The electrical junction box according to claim 1, wherein the housing has a side wall formed in a cylindrical shape, and Wherein, the electric wire is arranged near the side wall. 3. The electrical junction box according to claim 1, wherein the dividing wall is provided with a cutout at the end on the lower cover side, and Wherein, the fixing part is arranged on a side of the cutout away from the lower cover. 4. The electrical junction box according to any one of claims 1 to 3, Wherein, the arm part is passed through a band wrapped around the electric wire to fix the electric wire.

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